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Title: A Search for a Close-Mass Lepton Doublet

Abstract

Described is a search for a heavy charged lepton with an associated neutrino of nearly the same mass, together known as a close-mass lepton doublet. The search is conducted in e +e - annihilation data taken with the Mark II detector at a center-of- mass energy of 29 GeV. In order to suppress contamination from conventional two-photon reactions, the search applies a novel, radiative-tagging technique. Requiring the presence of an isolated, energetic photon allows exploration for lepton doublets with a mass splitting smaller than that previously accessible to experiment. No evidence for such a new lepton has been found, enabling limits to be placed on allowed mass combinations. Mass differences as low as 250-300 MeV are excluded for charged lepton masses up to 10 GeV.

Authors:
 [1]
  1. Stanford Univ., Stanford, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1454047
Report Number(s):
SLAC-R-342
DOE Contract Number:  
AC02-76SF00515
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English

Citation Formats

Riles, John Keith. A Search for a Close-Mass Lepton Doublet. United States: N. p., 2018. Web. doi:10.2172/1454047.
Riles, John Keith. A Search for a Close-Mass Lepton Doublet. United States. doi:10.2172/1454047.
Riles, John Keith. Thu . "A Search for a Close-Mass Lepton Doublet". United States. doi:10.2172/1454047. https://www.osti.gov/servlets/purl/1454047.
@article{osti_1454047,
title = {A Search for a Close-Mass Lepton Doublet},
author = {Riles, John Keith},
abstractNote = {Described is a search for a heavy charged lepton with an associated neutrino of nearly the same mass, together known as a close-mass lepton doublet. The search is conducted in e+e- annihilation data taken with the Mark II detector at a center-of- mass energy of 29 GeV. In order to suppress contamination from conventional two-photon reactions, the search applies a novel, radiative-tagging technique. Requiring the presence of an isolated, energetic photon allows exploration for lepton doublets with a mass splitting smaller than that previously accessible to experiment. No evidence for such a new lepton has been found, enabling limits to be placed on allowed mass combinations. Mass differences as low as 250-300 MeV are excluded for charged lepton masses up to 10 GeV.},
doi = {10.2172/1454047},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jun 14 00:00:00 EDT 2018},
month = {Thu Jun 14 00:00:00 EDT 2018}
}

Technical Report:

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